Controlling the Critical Temperature in Mg1−xAlxB2

被引：0

作者：

A. Bianconi

Y. Busby

M. Fratini

V. Palmisano

L. Simonelli

M. Filippi

S. Sanna

F. Congiu

A. Saccone

M. Giovannini

S. De Negri

机构：

[1] Università “La Sapienza”,Dipartimento di Fisica

[2] UMR CNRS ISMRA 6508,Laboratoire CRISMAT

[3] Università di Parma,CNISM Dipartimento di Fisica

[4] Università di Cagliari,Dipartimento di Fisica

[5] Università di Genova,Dipartimento di Chimica e Chimica industriale

来源：

Journal of Superconductivity and Novel Magnetism | 2007年 / 20卷

关键词：

Diamagnetic Signal; Metal Diborides; High Doping Sample; Mesoscopic Phase Separation; Meissner Fraction;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Here we report synthesis and characterization of high quality samples of the superconducting system Mg1−xAlxB2, with a novel optimized preparation method, in a wide range of Al concentration. All the physical properties of the samples can be tuned continuously with increasing Al content. We have characterized the samples for their structural, morphological and magnetic properties with high resolution XRD, SEM-EDS and susceptibility measurements. We have prepared a large number of Al doped MgB2 in the range 0<x<0.57. All the samples are bulk superconductors and the critical temperature show a smooth and regular behavior as a function of x.

引用

页码：495 / 501

页数：6

共 50 条

[1] Controlling the Critical Temperature in Mg1−xAlxB2
A. Bianconi
Y. Busby
M. Fratini
V. Palmisano
L. Simonelli
M. Filippi
S. Sanna
F. Congiu
A. Saccone
M. Giovannini
S. De Negri
Journal of Superconductivity and Novel Magnetism, 2007, 20 (7-8) : 503 - 503
[2] Leggett’s mode in Mg1−xAlxB2
Ya. G. Ponomarev
S. A. Kuzmichev
M. G. Mikheev
M. V. Sudakova
S. N. Tchesnokov
Hoang Van Hoai
B. M. Bulychev
E. G. Maksimov
S. I. Krasnosvobodtsev
JETP Letters, 2007, 85 : 46 - 50
[3] Anomalous Thermal Expansion in Superconducting Mg1−xAlxB2 System
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A. Bianconi
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Journal of Superconductivity, 2005, 18 : 737 - 741
[4] Controlling the critical temperature in Mg1-xAlxB2
Bianconi, A.
Busby, Y.
Fratini, M.
Palmisano, V.
Simonelli, L.
Filippi, M.
Sanna, S.
Congiu, F.
Saccone, A.
Giovannini, M.
De Negri, S.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2007, 20 (7-8) : 495 - 503
[5] Local Structure in Mg1−xAlxB2 System by High Resolution Neutron Diffraction
G. Campi
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Journal of Superconductivity and Novel Magnetism, 2012, 25 : 1319 - 1322
[6] Evidence of Electron–Phonon Interaction in Al-Substituted Mg1−xAlxB2
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Journal of Superconductivity, 2004, 17 : 199 - 203
[7] Investigation of a superconducting Mg1−xAlxB2 system by tunneling and microjunction (Andreev) spectroscopies
Ya. G. Ponomarev
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Journal of Experimental and Theoretical Physics Letters, 2004, 79 : 484 - 488
[8] Anisotropy of the lower and of the upper critical fields in Mg1-xAlxB2 single crystals
Wisniewski, A.
Puzniak, R.
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Baran, M.
Jun, J.
Zhigadlo, N. D.
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PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 (614-615): : 614 - 615
[9] Leggett's mode in Mg1-xAlxB2
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Sudakova, M. V.
Tchesnokov, S. N.
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Bulychev, B. M.
Maksimov, E. G.
Krasnosvobodtsev, S. I.
JETP LETTERS, 2007, 85 (01) : 46 - 50
[10] Th upper critical field and two-gap nature in Mg1-xAlxB2
Park, MS
Kim, HJ
Kang, B
Lee, SK
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2005, 18 (01): : 183 - 186

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